<router-outlet></router-outlet>
<clr-vertical-nav [clrVerticalNavCollapsible]="false"
                  [clr-nav-level]="2">
  <a clrVerticalNavLink
     routerLink="/opt/save"
     routerLinkActive="active">
    <clr-icon shape="floppy"></clr-icon>
    保存
  </a>
  <a clrVerticalNavLink
     routerLink="/opt/ui"
     routerLinkActive="active">
    <clr-icon shape="paint-roller"></clr-icon>
    界面
  </a>
  <a clrVerticalNavLink
     routerLink="/opt/stats"
     routerLinkActive="active">
    <clr-icon shape="info-standard"></clr-icon>
    统计
  </a>
  <a clrVerticalNavLink
     routerLink="/opt/credits"
     routerLinkActive="active">
    <clr-icon shape="certificate"></clr-icon>
    关于
  </a>
</clr-vertical-nav>
